摘要本设计中设计的氧气浓度监测仪是医用场合一种用于实时监测氧气浓度的医疗器械。
通过对氧气监测技术的研究，我们采用了电化学原理设计监测仪，选取了英国City technology公司的4系列电化学式传感器。在硬件方面，选择C8051单片机作为系统的电控单元，其余部分主要包括A/D转换电路、放大电路、按键电路、LCD显示电路、声光报警电路等；在软件方面，通过对系统各硬件部分的功能及技术参数要求，进行了相应的程序框图的设计其中包括数据采集流程图、A/D转换的流程图、液晶显示的流程图和程序总体流程图，同时应用C语言，对NO监测所需要的程序进行编程。68921
通过以上硬件、软件方面设计，使得氧气浓度监测仪结构轻便，性价比高，测量精度高。
毕业论文关键词：氧气浓度 电化学 传感器 单片机
毕业设计说明书外文摘要
Title Design of oxygen concentration monitor
Abstract
The oxygen concentration monitor designed in this design is a medical instrument used to monitor the concentration of oxygen in real time.
Through the research of oxygen monitoring technology, we used the electrochemical principle design monitor, selected the British technology City company's 4 series of electrochemical sensors.In terms of hardware, select the C8051 MCU as system of ECU, the rest mainly includes a / D conversion circuit, an amplifying circuit, keyboard interface circuit, LCD display circuit, an audible and visual alarm circuit; in terms of software, through the function and technical parameters on the system hardware requirements, corresponding program block diagram design including flow chart of data acquisition, a / D conversion of the flow chart, the liquid crystal display process diagram and the program flowchart. At the same time, the application of C language, the monitoring of no required for programming.
Through the above hardware and software design, the oxygen concentration monitor is portable, high cost performance and high measurement precision.
Keywords ：Oxygen concentration electrochemistry sensor Single Chip Microcomputer
目 次
1 绪论 1
1.1 背景及意义 1
1.3 本课题要研究和解决的问题 3
2 氧气浓度监测仪的原理和技术方法 4
2.1 基于光学技术的氧气浓度检测原理 4
2.2 基于电化学技术的氧传感器检测原理 7
2.3 数学模型的建立 9
3 基于电化学氧传感器原理的氧气浓度监测仪总体设计 11
3.1 氧气浓度监测仪功能及技术参数的确定 11
3.2 氧气浓度监测仪总体方案设计 12
4 氧气浓度检测仪硬件设计 15
4.1氧气传感器的选型 15
4.2 前置放大电路的设计 C8051单片机氧气浓度监测仪的设计+电路图:http://www.youerw.com/zidonghua/lunwen_77622.html